Impact water-motor.



No. 896,442. PATENTED AUG. 18, 1908. W. A. DQBLE. IMPACT WATER MOTOR. APPLICATION FILED MAR. 7,1900.

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IMPACT WATER MOTOR.

.PPLICATION FlLED MAR. 7, 1906.

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Z @lttozmwp PATENTED AUG. 18, 1908.

W. A. DOBLE. IMPACT WATER MOTOR. APPLICATION FILED MAR.7,1906.

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I wai UNITED strarn s enrnnr ion.

WILLlAM A. DOBLE, OF SAN FRANCISCO, GALIFORNIA, ASSIGNOR TO MAY 15. DOBIiE, ,OF

ALAMEDA, CALIFORNIA.

mPAo'r warns-Moron.

T 0 all whom it may concern:

Be it known that I, W {(LLIAM A, Donna, a citizen of the United States, residingat San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Impact 'WatenMotors, of which the following is a specification.

My invention relates to impact water'motors and to that class of such motors where a illustrate my invention, Fig. Z'is an end view of the parts shown in Fig. 1 Fig". 3 is a sec tional elevation in which some of the connected parts are modified.

The casing A of any suitable coi'istruction has a nozzle 1, the from which is controlled b a valve 5 and. is directed against the usual impact wheel X, and in order to prevent any undue increase of pressure witht in the casing from the sudden closing of the nozzle 1 and preserve the character of the jet, I make use of a compensating device consisting of a discharge port from the casing A which may be a nozzle 2 and a valve 8, and with these parts are combined moans whereby to secure a slip or lost motion in the connections so that the valve 8 is opened only after the valve 5 hascompIctod about threefourths of its closing movement. As a result, the normal variations of position ol the valve 5 'to compensate for changes ol load in operation are effected imle wndcntly ol the compensating device, the latter, however, coming into operation in order to prevent an increase of pressure in the casing when the valve 5 is carried beyond its normal position in closing. These main lectures are fully set forth in my application forlzetters Patent Specification of Letters Patent.

Application one Hare 7, 1905. Serial No. 304,695.

tionable and sudden variations in Patented u 18, 1908.

My present invention relatesparticularlyto devices for controlling the relative movements of the two valves, in the form of levers with a pair of toggles 65 and the valve stem 11 with a pair of toggles 67, and a lever or arm 62 upon a rock shaft 40 turning in bearings of the frame of the machine is connected by a link 64 with the toggles 65, while an arm 63 on said shaft is connected by a connecting rod H with the toggles 67. The movements of the lever or arm 62 are imparted synchronously to the valve 5, but the connection H between the operating lever of the main valve and the coi'npensating valve, is so constructed as to allow of a certain amount of sli or lost-motion securing or permitting the limited movement of the main operating lever in closing the main valve, without effecting any change in position to open the compensating valve.

The connections between the lever and the compensating valve may be of dilloront constructions. As shown in Fig. l, the rod 66 is in two sections, one connected with a yoke 69 in which the other slides to an extent limited by a collar 70, and a spring 71 between the collar and yoke allows the upper portion of the rod to slide in the yoke compressing the spring, alter the valve 8 closes its port and when the valve 5 is opened, and also holds the valve 8 in its closed position until the valve 5 has completed the major portion of its closing movement when the contact of the collar Ti) with the yoke will draw ppward the toggles 67 and open the dischargcloii nozzlc 2 It will be seen that by the use of the toggles, I not only secure the advantage resulting from increasing leverage and greater power in operating the parts, but I also avoid abrupt and sudden movements of the valve which would tend to occasion objecin the casing.

Thelcvor or arm 62 may be operated in any suitable manner, but as shown, is connected by a link 61 with a pivoted arm 60 which is connected to he piston rod 22 of a motor M, the movements of which are consary power to operate the operating lever 62 1 parts, while the governor itself exerts only '1;

and its connected e power requisiteto opcrate the control device of. the motor.

'further movement of the valve 4) or its reciprocatnm under normal variations In the construction shown in Fig. 3, there is a lever connection between the parts but without the use of toggles, the lever 62 being connected by a link to the end of the stem 7 of the valve 5 and having shoulders 77 and 7 8 between which slides a spool 75 having a circular recess receiving the forked ends of a lever 72 connected at the other end to the stem of the valve 8' A spring 79 is arranged between "he collar 77 and the spool 75 and the parts areso adjusted that during the normal movernents of the valve .5, the spring 7 9 permits the stem 7 to move independently of the spool, the valve 8 remaining in a closed position. 'lNhen, however, the valve 5 is carried. to the left beyond about threefourths of its travel in closing, the contact of the collar 78 with the spool will carry. the latter to the left and open the port coi-itrolled by the valve 53, the latter closing as the valve 5 is again inoved to open its port and being held closed by the pressure of the s )ring which, however, does not interfere with the to the right to compensate forvariations in load and to change the force of the jet thrown against the impact wheel X.

'Asin the construction of Figs. 1 and 2, the arm 62 may be shifted. by the action of the motorill oi' the governor.

While 1 have referred to'the action of the compensating device as occurring during about the last quarter of the travel ol the main valve, it will be understood that the extent of independent movement of the main valve will vary with circumstam-es, being always sulliclent to prevent reactions or shocks rcsi:lting'l'rom suddenly retarding the velocity of How ol water in the supply pipe.

it will be; evident that as the main valve opens, there will. be a closure of the discharge but at such a rate as to prevent shocks.

- I do not herein. claim hro'adlx the combination ol the two nozzles and valves and ac .tuating means as set lorth in my aforesaid n 'iplication Serial No. 205.606.

lV-itho'ut lii niting' inysell' to the construcl tionnnd arrange:nent shown, l. claim-- l5. in an impact water motor the combinatlon ,willi a'whcel provided with radial blades,

'jet nozzle and. mlvc'wilhin the nine, a

compen'sating nozzle and valve,v and lover coniuictionsbetween the two valves m which.

a lost motion is proviijled lo allow the main sess e extent before opening the con'ipei'isating' valve.

.2. In an impact water motor, the combination of a nozzle and valve, a supplemental or compensating nozzle and valve, and lever and connections between the two valves all arranged to insure the opening vof the coinpensatin valve onlyd uring about the last quarter of t 1e closing movement of the main valve. 3. In an impact water nn)toi,tl1c combination of a jet nozzle and-valve, a supplemental or con'ipensating nozzle and valve, toggles connected with the stenisghf the two valves, anda lever and connections for o' erating the toggles, substantially as set fort 1.

4. In an impact water meter the combination tion with a wheel pro vided with radial blades,-

with a wheel provided with radial blades, a et nozzle and valve within the same, a compensating nozzle and valve,

a jet nozzleand valve within the same, a compcnsating nozzle and valve, and lever connections between motion is provided to allow the main valve to close to about three-fourths its total extent beloreopening the compensating valve, a motor connected to operate said connections I and a governor for said motor.

l3. The combination oi the casing, its nozzles, main and supplementary valves, and l connections between a the same and said toggles to operate the lat toggles, of a lever, and

tcr, substantially a set forth. w

7. The comlnnation with the casing, Its nozzles, main and supplementary valves, and

toggles, oi a lever, and connections between thesame and. said toggles to operate the latter, with means whereby the su pleinentary valve is opened. as the main val substantially as set forth.

S. The combination with the wheel of an mi pact water l-notor, of a casmg having a nozthe two valves in which alost zle arranged to direct a jet against the wheel,

a main control valve within the said nozzle, a discharge portend valve therefor, and connections between the two valves in which a lost motion is provided, for the purpose set forth. l

l). The combination of the casing, main and compensating nozzles and valves, lever connections for operatin the main valve, and. connections between the lever and compensating valve including a two part connecting rod or link ermitting a limited'nyovement of melt ion i provided, and amotor, at lever oper- 10 onep'a'rtin epe ndently of,the ot l1er,substanat'ed thereby and connections between the tinlly as set ort'h. said latter lever and the main valve.

. 10. The combination with thewheel of an In testimony whereof I affix my signature 5 im )aet. water motor of no in havin anoz in )resence of two witnesses.

zle arranged to direct a jet against the wheel, WILLIAM A. .DOBLE. a main control valve wlthin the said nozzle, Witnesses:

a discharge port and valve therefor, connec- CHARLES E. FOSTER,

tions between the two valves in which a, lost I GEO. W. REA. I 

